Effect of Abiotic Factors on Degradation of Imidacloprid

Mahapatra, Bibhab; Adak, Totan; Patil, Naveen; Pandi, G. Guru Pirasanna; Gowda, G. Basana; Yadav, Manoj Kumar; Mohapatra, SD; Rath, Prakash Chandra; Munda, Sushmita; Jena, Mayabini

doi:10.1007/s00128-017-2159-6

Cited by 19 publications

(5 citation statements)

References 19 publications

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“…LODs and LOQs were comparable to that of HPLC-ESI-MS/MS methods (1-20 ng/g) developed for food (pomegranate, coconut and wheat, etc.) residue analysis [31][32][33][34], but considerably lower than the methods based on HPLC-MS/MS, GC-ECD/MS and HPLC-UV (5-79 ng/g) for soil residue analysis [35][36][37].…”

Section: Analytical Performancementioning

confidence: 99%

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

Shi

Chen

et al. 2020

Pol. J. Environ. Stud.

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In this study, 10 frequently used pesticides in apple orchards from the major apple production area of China were identified through 150 questionnaires. Based on Orbitrap high-resolution mass spectrometry, a method for detecting these pesticides in soils was developed. Typically, these compounds can be extracted from dry soil samples using dichloromethane: acetone (2:1, v:v) and purified by dispersive solid-phase extraction (PSA and C18). The qualitative and quantitative analyses can be undertaken by monitoring the MS1 precursor ions under full scan mode within a mass error of <5 ppm (resolution 120000). The recoveries ranged from 68.4% to 102.4% (SD<10.5%), the matrix effects induced signal fluctuation was less than 10%, and the intra-and inter-day precisions were all below 5%. For 14 surface soil samples randomly collected from an apple orchard in China, most pesticides presented the highest detection frequencies (100%), with imidacloprid and tebuconazole showing the highest residue levels (4.1-39.1 and 9.8-350.2 ng/g dry weight, respectively). Compared with previous methods for analyzing individual or several pesticides, the proposed method represents a promising means of investigating these frequently used pesticide residues in apple orchards in China.

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Section: Analytical Performancementioning

confidence: 99%

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

Shi

Chen

et al. 2020

Pol. J. Environ. Stud.

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show abstract

“…More knowledge has been accumulated over the years about other neonicotinoids. Mahapatra et al [73] studied the effects of abiotic factors on the degradation of imidacloprid. They found that the rate of dissipation of imidacloprid from the soil samples was faster under submerged conditions compared to when the soil was left in its field capacity and soil samples were air-dried.…”

Section: Discussionmentioning

confidence: 99%

Limited Influence of Abiotic and Biotic Factors on the Efficacy of Soil Insecticides and Entomopathogenic Nematodes when Managing the Maize Pest Diabrotica v. virgifera (Coleoptera: Chrysomelidae)

et al. 2022

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Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae) is a serious pest that infects maize. Insecticides or entomopathogenic nematodes are used to control the root-damaging larvae. However, such treatments are reportedly inconsistent in terms of efficacy under farming conditions. To better understand the reasons behind these inconsistencies, we studied the control efficacy of seed coatings, such as clothianidin; granular soil insecticides, such as cypermethrin and tefluthrin; and fluid-applied entomopathogenic nematodes, such as Heterorhabditis bacteriophora (Rhabditida: Heterorhabditidae). We assessed the influence of 12 biotic and 20 abiotic factors on the reduction of Diabrotica v. virgifera populations and on the prevention of root damage in 20 field-scale experiments in Hungary between 2010 and 2020. Results confirmed that all treatment types are able to control pest populations and prevent root damage, but with high variability. Our analyses showed that most investigated factors, for example, air temperature, most soil parameters, and pest infestation levels, did not influence the efficacy of the treatments. The efficacy of clothianidin in preventing root damage decreased slightly with increasing soil bulk density but improved with late maize sowing, and therefore late treatment, as well as with increasing soil moisture in July. The efficacy of cypermethrin in preventing damage improved slightly with increasing clay content in the soil. Tefluthrin was slightly less effective in reducing D. v. virgifera with increasing soil moisture in June. However, all these factorial influences were minor in their absolute effects. Surprisingly, none of the investigated factors seemed to influence the efficacy of H. bacteriophora. In conclusion, the efficacy of chemical and biological treatments against this soil pest remains difficult to predict under farming conditions.

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“…Physiological degradation of these chemicals by the animal could also be rapid, bringing contamination levels below detection limits within days after exposure, especially if contamination levels are low (Klaassen and Watkins 2008). For example, imidacloprid was found to degrade to ~22.5% of starting levels after 25 days (Liu et al 2011) and ~50% after 60 days (Mahapatra et al 2017) of application, depending on environmental factors. Additionally, the absence of pesticides in our birds is likely not simply resulting from the technical capacity to detect them in biological tissues, as our minimal detectable limit (0.01 mg/kg; atrazine, clothianidin, and imidacloprid) and limit of quantification (0.8-2.05 mg/kg; glyphosate and AMPA) is well below what has previously been shown to cause toxicity in birds (Fishel 2005).…”

Section: Discussionmentioning

confidence: 99%

No common pesticides detected in snow buntings utilizing a farmland landscape in eastern Québec

Ruhs¹,

Love²,

Drainville³

et al. 2021

ACE

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Effect of Abiotic Factors on Degradation of Imidacloprid

Cited by 19 publications

References 19 publications

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

Limited Influence of Abiotic and Biotic Factors on the Efficacy of Soil Insecticides and Entomopathogenic Nematodes when Managing the Maize Pest Diabrotica v. virgifera (Coleoptera: Chrysomelidae)

No common pesticides detected in snow buntings utilizing a farmland landscape in eastern Québec

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